dll already loaded in another classloader about java-simple-serial-connector HOT 2 OPEN

This is due to separate class loaders being used for each web app.  To avoid 
this, you will need to ensure that the jssc classes are loaded by a parent 
class loader.  This can be done by placing the jssc jar in %CATALINA_HOME%/lib/ 

hello... can you tell me how to do this..?

you will need to ensure that the jssc classes are loaded by a parent class 
loader.
This can be done by placing the jssc jar in %CATALINA_HOME%/lib/